Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, the invention aims to provide an energy-saving type warm air system of an electric automobile, which utilizes the waste heat generated by a power system of the electric automobile to combine with a PTC heater to supply warm air to the inner space of a compartment of the automobile, improves the efficiency of the warm air system of the electric automobile, reduces the energy consumption, and can prolong the driving range when the electric automobile is used in a low-temperature environment.
In order to achieve the above object, an embodiment of the present invention discloses an energy-saving warm air system for an electric vehicle, which is characterized by comprising: a blower; a warm air system control device; an in-vehicle temperature sensor; a PTC heater control device; a PTC heater; an internal and external circulation air door actuator; a mixing damper actuator; a waste heat air door actuator; waste heat input air duct; an internal circulation air duct; an external circulation air duct; the PTC heater is arranged in the automobile compartment, the air blower is connected with the automobile power system through the waste heat input air duct, and the air blower is started to supply air to the automobile power system.
The space of the automobile power system comprises but is not limited to a motor, a Motor Controller (MCU), a DCDC converter, a power battery pack, a radiator and the like.
The space where the PTC heater is located is respectively communicated with the inner space of the automobile compartment, the inner circulation air duct, the outer circulation air duct and the waste heat input air duct.
The air blower is arranged between the space where the PTC heater is located and the input air channel, and after the air blower is started, air in the internal circulation air channel, the external circulation air channel and the waste heat input air channel can enter the inner space of the automobile compartment through the space where the PTC heater is located.
The warm air system control device is connected with the PTC heater control device and receives the temperature information of the inner space of the automobile compartment obtained by monitoring from the temperature sensor in the automobile, and according to the manually set threshold value of the inner space temperature of the automobile compartment, the warm air system control device sends a starting or stopping signal to the PTC heater control device to control the power-on or power-off of the PTC heater.
The warm air system control device is connected with the air blower, and sends a starting or closing signal to the air blower by manually operating the warm air system starting and stopping switch.
The warm air system control device is connected with the internal and external circulation air door actuator, and the warm air system control device sends an air channel switching signal to the internal and external circulation air door actuator through manually operating the internal and external circulation switch of the warm air system to control the opening or closing of the air door of the internal circulation air channel and the air door of the external circulation air channel.
The warm air system control device is connected with the mixing air door actuator, and the warm air system control device sends a warm air and cold air switching signal to the mixing air door actuator through a manual operation warm air system start-stop switch to control warm air and cold air to be input into the inner space of the automobile compartment.
The warm air system control device is connected with the waste heat air door actuator, the warm air system start-stop switch is operated manually, the warm air system control device sends an air door opening or closing signal to the waste heat air door actuator, and the opening or closing of the air door of the waste heat input air channel is controlled.
The warm air system control device is connected with the whole warm air system and receives the temperature information of the inner space of the automobile compartment obtained by monitoring from the temperature sensor in the automobile, and the warm air system control device controls the whole warm air system to work according to the manually set threshold value of the inner space temperature of the automobile compartment.
The PTC heater heats air flowing through the space where the PTC heater is located, and the warm air is supplied to the inner space of the automobile compartment by combining the waste heat of an automobile power system.
Furthermore, the space where the PTC heater is located is communicated with the inner space of the automobile compartment through the inner circulation air duct, the inner circulation function is started, air from the inner space of the automobile compartment after the blower is started can firstly enter the space where the PTC heater is located through the inner circulation air duct, and then the air is input into the inner space of the automobile compartment through the space where the PTC heater is located, so that the air in the inner space of the automobile compartment can flow circularly.
Furthermore, the outer circulation air duct communicates the space where the PTC heater is located with the external environment of the automobile compartment, the outer circulation function is started, and after the blower is started, air from the external environment of the automobile compartment firstly enters the space where the PTC heater is located through the outer circulation air duct and then is input into the internal space of the automobile compartment through the space where the PTC heater is located, so that the air in the internal space of the automobile compartment and the air in the external environment of the automobile compartment are mixed.
Furthermore, the warm air system control device is connected with all parts of the whole warm air system and receives the temperature information of the inner space of the automobile compartment obtained by monitoring from the temperature sensor in the automobile, under the high-load working condition of the automobile power system, the heat productivity of the automobile power system is increased, the temperature of the air entering the inner space of the automobile compartment from the space where the automobile power system is located through the waste heat input air channel and the space where the PTC heater is located is increased, when the temperature of the inner space of the automobile compartment reaches or exceeds the manually set threshold value, the warm air system control device sends a stop signal to the PTC heater control device, the PTC heater control device controls the power-off of the PTC heater, and the warm air system supplies warm air to the inner space of the automobile compartment by the waste heat generated by the automobile power system.
Compared with the existing vehicle-mounted warm air system of the electric automobile, the vehicle-mounted warm air system has the advantages that the waste heat generated by the power system of the electric automobile is combined with the PTC heater to improve the efficiency of the warm air system, reduce the energy consumption and increase the driving range of the electric automobile when the electric automobile is used in a low-temperature environment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The components of embodiments of the present invention described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. The detailed description of the embodiments is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
The invention is described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an energy-saving heating system of an electric vehicle according to an embodiment of the invention. As shown in fig. 1, the energy-saving warm air system for an electric vehicle according to the embodiment of the present invention includes a cabin interior space 100, a warm air system control device 200, a PTC heater 300, an internal circulation air duct 400, a waste heat circulation air duct 500, a power system space 600, and an external circulation air duct 700. The interior space 100 of the vehicle compartment is respectively communicated with the PTC heater 300 and the internal circulation air duct 400, the PTC heater 300 is respectively communicated with the waste heat circulation air duct 500, the power system space 600 and the external circulation air duct 700, the warm air system control device 200 is connected with the PTC heater 300, and the warm air system control device 200 controls the PTC heater 300. When warm air is required, the system is switched to the waste heat circulating duct 500, and air from the power system space 600 enters the cabin interior space 100 through the PTC heater 300. Under the working condition that the automobile stops or starts to run, the PTC heater 300 is in an opening state, and the PTC heater 300 supplies warm air to the inner space 100 of the carriage together with the waste heat of the power system; under the high-load working condition of the automobile power system, the heat productivity of the power system is large, the PTC heater 300 is in a closed state, and the warm air is supplied to the internal space 100 of the carriage by the waste heat generated by the power system completely.
Fig. 2 is a system architecture diagram of an energy-saving heating system of an electric vehicle according to the present invention. As shown in fig. 2, according to the energy-saving warm air system of an electric vehicle of the embodiment of the invention, the components of the system and the functions thereof in the system are as follows:
blower 201: the air circulation control device is connected with the warm air system control device and is controlled by the warm air system control device to control the air circulation flow in the carriage.
Warm air system control device 202: and receiving sensing information from a temperature sensor in the vehicle, and controlling the whole set of heating system to work according to a manually set threshold value.
In-vehicle temperature sensor 203: and the control device is connected with the warm air system and is placed in the carriage of the automobile carriage for monitoring the temperature of the inner space of the automobile carriage and feeding back the temperature to the control device of the warm air system, and when the temperature in the automobile reaches a set threshold value, the control device of the warm air system outputs a PTC heater closing signal.
PTC heater control device 204: the heater system control device is connected and used for receiving the starting and stopping signals of the PTC heater from the heater system control device and controlling the power on and off of the PTC heater.
PTC heater 205: and the PTC heater control device is connected and controlled by the PTC heater control device to heat the air flowing through the space where the PTC heater control device is arranged.
Inner and outer circulation damper actuators 206: and the air door is connected with the warm air system control device, is controlled by the warm air system control device, and is used for controlling the air door of the internal circulation air channel and the air door of the external circulation air channel and switching the air channels.
Blend door actuator 207: the control device is connected with the warm air system control device and is controlled by the warm air system control device, and the warm air system control device is used for switching warm air and cold air to be input into the carriage.
Waste heat damper actuator 208: the air door is connected with the warm air system control device and is controlled by the warm air system control device, and is used for controlling the waste heat input of the power system into the carriage, and after the warm air function is started, the air door of the waste heat input air channel between the space where the power system is located and the carriage is opened.
FIG. 3 is a system operation flow chart of the energy-saving warm air system of the electric vehicle according to the present invention. As shown in fig. 3, according to the energy-saving warm air system of an electric vehicle in an embodiment of the present invention, a work flow of the warm air system includes the following steps:
the first step is as follows: and starting the warm air.
The second step is that: and opening the waste heat air door.
The third step: the blend door is opened.
The fourth step: and starting the blower.
The fifth step: and monitoring the temperature of the inner space of the automobile compartment, and if the temperature is lower than 38334g, performing the sixth step, and if the temperature is higher than or reaches 38334g, jumping to the eighth step.
And a sixth step: the PTC heater is energized.
The seventh step: and monitoring the temperature of the inner space of the automobile compartment, returning to the sixth step if the temperature is lower than 38334g, and performing the eighth step if the temperature is higher than or reaches 38334g.
Eighth step: the PTC heater is de-energized.
The ninth step: the warm air system is completely supplied with warm air by waste heat generated by a power system of the automobile.
Other structures and functions of the energy-saving type warm air system of the electric vehicle according to the embodiment of the present invention are known to those skilled in the art, and are not described in detail for reducing redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.